A small army of engineers, designers and construction workers are set to make the biggest move in U.S. aviation history next weekend, when 15 different airlines relocate terminals at the Los Angeles International Airport. (Photo by Brittany Murray, Press Telegram/SCNG)

Green vests will be worn by more than 200 Los Angeles International Airport volunteer guides, who’ll help answer travelers’ questions during this week’s big move. (Courtesy photo)

And while 15 different airlines and their workers are scrambling to get their final checklists in place, the TSA’s airline workers aren’t too worried.

“We are going to do everything we can to make sure that passengers aren’t missing flights because of the confusion with the new terminals,” said Melendez. “But passengers should be prepared.”

Airport officials warn travelers to arrive early during the move that begins late Friday night and ends on Wednesday. Travelers should also check departure terminals and gates ahead of time, officials said.